Driven by the dream of improving humanity down the generations, the management of reproduction was the core activity for which eugenicists strived. Although they had many different visions, eugenicists all agreed that their central task was to create for the future a fitter world through healthier reproduction. ‘Eugenic reproduction’ outlines the policies employed worldwide to further this aim: marriage laws; encouraging reproduction through incentives designed to secure healthy and stable population growth among the fit; sex education to inspire responsible reproduction; artificial insemination; birth control; abortion; euthanasia; and sterilization. Sterilization remains the most widely recognized of negative eugenic measures. It was most notably implemented in the United States, Germany, and Scandinavia.